HTML view - Display KM file

Hi Team,

I would like to display a html page which is placed on Portal KM inside a Visual composer Model.

I tried using HTML view but could not succeed.

When i give the URL and test it during the design time it displays properly but during run time i'm getting 404 resource not found error.

And i'm able to access other URL's but not the files which are on portal.

Any suggestions..?